Single or Multi Threaded Projects

There are two strategies to complete the things you want to get done:

1. Start them all at the same time
2. Work on one at a time until it is completed, then work on the next highest priority

How do you do it in your daily life? If you have a list of tasks that you need to get done which approach do you use?

Let's think about how your company completes project. Which approach do they use? Are they the same?

Let's weigh the Pros and Cons of each approach. Let's assume your team needs to complete 3 similar sized projects (Project A, Project B, Project C) within 3 months.

Start all the projects at the same time (Multi-threaded)

Pros:

All project stakeholders are told their project has started

Cons:

Tracking each project's status is difficult

People on the project frequently have to switch thinking between each project

Each project will take 3 months duration to finish

Don't start earning returns on the projects

If there are overruns, each project is affected

One project at a time (Single-threaded)

Pros:

Only need to track a single project at a time

People on the project are focused

Each project should finish in one month

Project A will earn returns for 2 months

Project B will earn 1 month of returns

Overruns affect fewer projects

Cons:

Project stakeholders are told their project hasn't started

 

Am I missing any Pro/Cons for either of these scenarios?